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Ultrathin heat pipe with bionic wick

A technology of ultra-thin heat pipes and liquid-absorbing cores, which can be used in heat transfer modification, indirect heat exchangers, heat exchange equipment, etc., and can solve the problems of boiling and condensation enhanced heat transfer technologies that are difficult to directly transplant micro heat pipes

Active Publication Date: 2021-05-11
GUANGDONG MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to limited space and complex competition between evaporation and condensation, various boiling and condensation enhanced heat transfer technologies currently used in conventional large-scale heat exchange equipment are difficult to directly transplant into micro heat pipes

Method used

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  • Ultrathin heat pipe with bionic wick
  • Ultrathin heat pipe with bionic wick
  • Ultrathin heat pipe with bionic wick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Such asFigures 1 to 7As shown, the present embodiment has an ultra-thin heat pipe having a bionic hydraulic core comprising an evaporation section 1, a heat insulating section 2, and a condensation section 3 in sequentially.

[0044]The evaporation section 1 includes an evaporation tube 11 and an evaporation absorbing core 12; the evaporation absorbing core 12 is disposed in the evaporation tubular 11 and there is a gap between the inner wall of the evaporation tubular 11 to form an external evaporation flow path; evaporation suction The core 12 is provided with an inner evaporation flow path; the evaporation water core 12 is disposed with a plurality of hydrophobic micro-pores 13 in which an inverse evaporation flow path and an inner evaporation flow path. The inner wall of the evaporation tubular body 11 is provided with holes 14 opposite to the hydrophobic micro-tissue small hole 13; hole 14 is pouring tapered. Each of the hydrophobic micro-pores 13 hole walls and edges and ho...

Embodiment 2

[0059]In this embodiment, an ultra-thin heat pipe having a bionic absorbing core, and the difference from the first embodiment is that the number of evaporation sections, the heat insulating section, and the condensation section are one. In this embodiment, the amount of evaporation section and / or the heat insulating section and / or the condensation section is more than two;

[0060]When the evaporation segment is more than two, all evaporation sections are sequentially connected to the insulation segment;

[0061]When the heat insulation section is more than two, all heat-inspiration sections are sequentially connected, and the evaporation segment and condensation segment are respectively connected.

[0062]When the condensation segment is more than two, all condensation sections are sequentially connected to the heat insulating segment.

[0063]This design enables modular design and assembly of evaporation segments, heat insulation sections, and condensation segments, and improves heat pip...

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Abstract

The invention provides an ultrathin heat pipe with a bionic wick. The ultrathin heat pipe comprises an evaporation section, a heat insulation section and a condensation section which are sequentially connected; the evaporation section comprises an evaporation pipe body and an evaporation liquid absorption core; a plurality of hydrophobic micro-nano small holes are distributed in the evaporation liquid absorption core; holes are formed in the inner wall of the evaporation pipe body; the wall and the edge of each hydrophobic micro-nano hole and the surface of each hole are covered with hydrophobic membranes; super-hydrophobic nucleation pits are uniformly and densely distributed on the surfaces of the hydrophobic membranes; the condensation section comprises a condensation pipe body and a condensation liquid absorption core; a plurality of hydrophilic micro-nano small holes are formed in the condensation liquid absorption core; the hole walls and the edges of the hydrophilic micro-nano small holes and the inner wall of the condensation pipe body are covered with hydrophilic films; super-hydrophilic nucleation convex points are uniformly and densely distributed on the surfaces of the hydrophilic films; the super-hydrophobic nucleation pits are in an inverted cone shape; the super-hydrophilic nucleation convex points are cylindrical. The ultrathin heat pipe improves heat exchange performance by improving phase-change heat exchange capability, and realizes light weight and compactness.

Description

Technical field[0001]The present invention relates to the technical field of heat dissipation devices, and more particularly to an ultra-thin heat pipe having a bionic water absorbing core.Background technique[0002]Large-scale integrated chip technology is the core of intelligent manufacturing, and it is also the key to the upgrading of other manufacturing industries. The heat dissipation problem is the bottleneck in the electronic chip industry. The temperature of the electronic product has increased sharply by 10 ° C, and the reliability may be reduced to the original half, and the temperature raised from 75 ° C to 125 ° C, and the reliability becomes the original 20 %. With the improvement of electronic chip integration, the function of integrated devices is getting more complex, and the power is constantly increasing. In addition, the need for electronic equipment miniaturization and maneuration in special fields, and its structural design is developed towards the small assembly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/04F28F13/18
CPCF28D15/04F28F13/185F28F13/187
Inventor 陈雪清童蕾
Owner GUANGDONG MECHANICAL & ELECTRICAL COLLEGE